US 11,967,891 B2
Mitigation of harmonic disturbances in a power converter
Huaqiang Li, Menomonee Falls, WI (US)
Assigned to Eaton Intelligent Power Limited, Dublin (IE)
Filed by Eaton Intelligent Power Limited, Dublin (IE)
Filed on Feb. 15, 2022, as Appl. No. 17/672,432.
Prior Publication US 2023/0261561 A1, Aug. 17, 2023
Int. Cl. H02M 1/12 (2006.01); H02J 3/01 (2006.01); H02M 1/00 (2006.01); H02M 5/458 (2006.01); H02P 27/08 (2006.01)
CPC H02M 1/12 (2013.01) [H02J 3/01 (2013.01); H02M 1/0009 (2021.05); H02M 5/458 (2013.01); H02P 27/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A bi-directional power converter comprising:
a plurality of input nodes, each input node configured to electrically connect to one phase of a multi-phase AC electrical power distribution network;
an electrical network configured to convert alternating current (AC) to direct current (DC) and to convert DC current to AC current, the electrical network comprising a plurality of electronic switches; and
a control system configured to:
estimate harmonic voltage content at three intermediate nodes in the bi-directional power converter based on a measured electrical quantity; and
control the electronic switches to compensate for the estimated harmonic voltage content.